Check whether the number has only first and last bits set | Set 2 | C # to check whether the number has only first and last bits set ; function to check whether the number has only first and last bits set ; Driver Code
using System ; class GFG { static bool onlyFirstAndLastAreSet ( int n ) { if ( n == 1 ) return true ; if ( n == 2 ) return false ; return ( ( ( n - 1 ) & ( n - 2 ) ) == 0 ) ; } public static void Main ( ) { int n = 9 ; if ( onlyFirstAndLastAreSet ( n ) ) Console . Write ( " Yes " ) ; else Console . Write ( " No " ) ; } }